Fitbit has multiple daily goals that you can set. These goals are represented on fitbit.com, the mobile apps, and on the device. If you want to change what the goal value is, you can do this on fitbit.com by hovering over the dashboard tile and clicking on the gear icon in the lower left.
post- A prefix that means after, as in postoperative, after an operation, or behind, as in postnasal, behind the nose or nasal passages.
Postscript - A postscript (PS or P.S.) is writing added after the main body of a letter or other body of writing. The term comes from the Latin post scriptum, an expression meaning written after (which may be interpreted in the sense of that which comes after the writing).